Metrohm 807 Dosing Unit - Manual (Page 35)

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3 Installation
807 Dosing Unit
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The centering tube stopper fits into the opening of the centering
tube.
Figure 20 Centering tube on the dosing cylinder
3 Slide the housing onto the centering tube.
4 Press the housing onto the tabletop.
The dosing piston is pressed into the cylinder until the stopper is flush
with the upper edge of the housing.
Figure 21 Stopper of the dosing piston flush with the upper edge
of the housing
5 Afterwards, remove the housing once again.